Engine mounting structure for reducing vibration

Abstract

Disclosed herein is an engine mounting structure for reducing vibration. In particular, an engine having a mass is mounted to a damper pulley or a drive plate thereof to form an outer balancer. A roll mount is positioned on a virtual yaw axis after the virtual yaw axis is set in the engine, and an engine mount is mounted to one end of a virtual torque roll axis after the virtual torque roll axis is set in the engine. Furthermore, a transmission mount is mounted to the other end of the virtual torque roll axis. Therefore, the mounts are mounted to the engine to reduce vibration at the time of idle vibration, thereby making it possible to improve NHV performance of a vehicle and increase salability and driving convenience of a driver.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is based on and claims priority from Korean Patent Application No. 10-2012-0153498, filed on Dec. 26, 2012 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to an engine mounting structure for reducing vibration, and more particularly, to an engine mounting structure for reducing vibration during idle vibrations via the engine mounts.[0004]2. Description of the Prior Art[0005]With an increase in a demand for compact vehicles, the size of an engine has become smaller and as such vehicles in which a 3-cylinder engine is mounted therein have become increasingly popular. However, currently, 3-cylinder engines have some drawbacks compared to a typical 4-cylinder engine due to the amount of vibration they produce. In connection with this, the greatest weakness in view...

AI Technical Summary

Benefits of technology

[0008]Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art while advantages achieved by the prior art are maintained intact. Advantageously, the exemplary embodiment of the present invention provides an engine mounting structure that reduces vibration during idling via engine mounts that are supporting the engine.

[0009]In one aspect of the present invention, there is provided an engine mounting structure for reducing vibration that includes an engine having a mass mounted at a damper pulley or a drive plate thereof to form an outer balancer; a roll mount positioned on a virtual yaw axis after the virtual yaw axis is set in the engine; an engine mount mounted at one end of a virtual torque roll axis after the virtual torque roll axis is set in the engine; and a transmission mount mounted at the other end of the virtual torque roll axis.

[0010]More specifically, the entire excitation of the engine may be generated along the virtual yaw axis through the mass. Additionally, the roll mount may be a roll rod type mount reducing horizontal rigidity, and the engine mount and the transmission mount may be damping mounts in a front and rear direction for reducing a spring value at an idle frequency. Furthermore, orifice plates in the front and rear direction may be formed in the engine mount and the transmission mount to enable damping in the front and rear direction.

Problems solved by technology

However, currently, 3-cylinder engines have some drawbacks compared to a typical 4-cylinder engine due to the amount of vibration they produce.

Although some engine mounts for reducing vibration and noise generated by the engine have been developed, a significant amount of vibration is still generated in yaw and roll moments at the time of idle vibration to deteriorate NVH performance of the vehicle, such that salability and driving performance of the vehicle is also deteriorated as a result of the vehicles lack-luster NVH performance.

Images